JP2018195245A - Operating device - Google Patents

Abstract

To provide an operating device capable of suppressing variations of the determination for the push operation performed by the same degree of the operating force as that performed on the different places of the operating surface.SOLUTION: An operating device 1 stores output values when the same load is applied on a predetermined reference point 200 and a plurality of measurement points on an operating surface 20, and includes: a control part 6 for determining a n-th threshold value Thcalculated according to output values of the reference point 200 and the n-th measurement point and a (n1) th threshold value Thcalculated according to the output values of the reference point 200 and the (n1) th measurement point are added by a contribution ratio according to the actually detected operation point P and determines the determination threshold value Th used for the determination of the push operation when the operation is detected in a region surrounded by a reference point 200, a n-th measurement point, and a (n1)th measurement point.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an operating device.

  As a conventional technique, a touch operation unit including an operation surface, a pressing pressure detection unit that is provided in the touch operation unit and detects a pressure or a load applied to the touch operation unit, and an output of the pressing pressure detection unit is a predetermined threshold value. There is known a vehicle operation device that includes a control device that detects a determination operation when the value exceeds the limit (for example, see Patent Document 1).

  The control device for the vehicle operating device sets the threshold value higher when the vehicle is traveling than when the vehicle is stopped.

JP 2013-117900 A

  However, in the conventional vehicular operating device, even if the operator performs the push operation on the operation surface in the same manner, there is a possibility that the load detected depending on the location is different and the push operation is not determined.

  Accordingly, an object of the present invention is to provide an operating device capable of suppressing variations in determination with respect to a push operation performed with the same operating force at different locations on the operating surface.

  One aspect of the present invention includes a detection unit that detects an operation performed on the operation surface, a load detection unit that detects a load applied to the operation surface, a reference point predetermined on the operation surface, and a plurality of measurement points. When an output value when the same load is applied is stored, and an operation is detected in an area surrounded by the reference point, the nth measurement point (n is an integer of 1 or more), and the (n + 1) th measurement point, An nth threshold value calculated based on the output values of the reference point and the nth measurement point, assuming that there is an operation point on the nth straight line connecting the reference point and the nth measurement point, and the reference The (n + 1) th threshold value calculated according to the output values of the reference point and the (n + 1) th measurement point on the assumption that there is an operation point on the (n + 1) th straight line connecting the point and the (n + 1) th measurement point Is added at a contribution rate according to the actually detected operation point, and used to determine the push operation. Providing an operating device including a determination unit for determining a value, the.

  According to the present invention, it is possible to suppress a variation in determination with respect to a push operation performed with the same level of operation force at different locations on the operation surface.

FIG. 1A is a schematic diagram illustrating an example of the inside of a vehicle in which the operating device according to the embodiment is mounted, and FIG. 1B is a schematic diagram for explaining an example of the configuration of the operating device. Yes, FIG. 1C shows an example of a block diagram of the operating device. FIG. 2A is a schematic diagram for explaining an example of measurement points, straight lines, and regions set on the operation surface of the operation device according to the embodiment, and FIG. 2B is a load threshold value. FIG. 2C is a graph showing an example of the relationship between the angle and the threshold value. FIG. 3 is a flowchart illustrating an example of the operation of the controller device according to the embodiment.

(Summary of embodiment)
The operation device according to the embodiment includes a detection unit that detects an operation performed on the operation surface, a load detection unit that detects a load applied to the operation surface, a reference point predetermined on the operation surface, and a plurality of measurements. The output value when the same load is applied at the point is stored, and the operation is detected in a region surrounded by the reference point, the nth measurement point (n is an integer of 1 or more), and the (n + 1) th measurement point. The nth threshold value calculated according to the output values of the reference point and the nth measurement point, assuming that there is an operation point that has detected an operation on the nth straight line connecting the reference point and the nth measurement point, And the (n + 1) th step calculated according to the output values of the reference point and the (n + 1) th measurement point on the (n + 1) th straight line connecting the reference point and the (n + 1) th measurement point. The threshold is added at a contribution rate according to the actually detected operating point and used to determine the push operation. It is schematically configured to include a determination unit for determining a determination threshold.

  This operating device uses the output values for loads applied to different positions on the operating surface to determine the judgment threshold, so compared with the case where this configuration is not adopted, the same operating force at different locations on the operating surface. It is possible to suppress the variation in the determination with respect to the push operation performed by.

[Embodiment]
(Overview of operation device 1)
FIG. 1A is a schematic diagram illustrating an example of the inside of a vehicle in which the operating device according to the embodiment is mounted, and FIG. 1B is a schematic diagram for explaining an example of the configuration of the operating device. Yes, FIG. 1C shows an example of a block diagram of the operating device. FIG. 2A is a schematic diagram for explaining an example of measurement points, straight lines, and regions set on the operation surface of the operation device according to the embodiment, and FIG. 2B is a load threshold value. FIG. 2C is a graph showing an example of the relationship between the angle and the threshold value. In FIG. 2A, the horizontal axis is the x axis and the vertical axis is the y axis with the center of the operation surface 20 as the origin. In FIG. 2B, the horizontal axis is the distance D from the reference point 200, and the vertical axis is the output value V output from the load detection unit 4. Note that, in each drawing according to the embodiment described below, the ratio between figures may be different from the actual ratio. In FIG. 1C, the flow of main information is indicated by arrows.

  For example, as illustrated in FIG. 1A, the operating device 1 is disposed on a floor console 80 between a driver seat and a passenger seat of the vehicle 8. The operation device 1 is configured to be able to operate, for example, a cursor displayed on a display unit of an electronic device mounted on the vehicle 8. The display device 85 disposed on the center console 81 functions as the display unit.

  For example, as illustrated in FIGS. 1A to 1C, the operation device 1 includes a touch pad 2 as a detection unit that detects an operation performed on the operation surface 20 and a load applied to the operation surface 20. And a load detection unit 4 for detecting F.

Further, for example, as illustrated in FIGS. 2A to 2C, the controller device 1 outputs an output when the same load is applied to a predetermined reference point 200 and a plurality of measurement points on the operation surface 20. When a value is stored and an operation is detected in a region surrounded by the reference point 200, the nth measurement point (n is an integer of 1 or more), and the (n + 1) th measurement point, the reference point 200 and the nth measurement are detected. The reference point 200, the nth threshold Th _n calculated according to the output value of the nth measurement point, and the reference point 200, assuming that the operation point P has detected an operation on the nth straight line connecting the points, The (n + 1) th threshold value calculated according to the output values of the reference point 200 and the (n + 1) th measurement point, assuming that the operation point P is on the (n + 1) th straight line connecting the (n + 1) th measurement point. the Th n + _1, are added by the contribution rate according to the actual detected operation point P pushed And a control section 6 as determination unit for determining a determination threshold Th used for the determination.

  As an example, the measurement points of the present embodiment are eight measurement points (first measurement point 21 to eighth measurement point 28) adjacent in the counterclockwise direction on the paper surface of FIG. 2A. It is not limited and may be more. Therefore, n in the present embodiment is an integer of 1 to 7 (1 ≦ n ≦ 7).

  Moreover, the output value output from the load detection part 4 is the voltage V as an example. Therefore, the load threshold Th is set as a voltage value as an example. When the load detection unit 4 uses the load value (N) converted from the voltage V as an output value, the load threshold Th is set as the load value (N). As an example, the push operation is performed as a determination operation for an item selected with a cursor or the like.

  The operation surface 20 of the touch pad 2 has, for example, a square shape as shown in FIG. 2A, but is not limited to this, and has a rectangular shape, rounded corners, The sides or the whole may be curved. The reference point 200 described above is a center point of the operation surface 20 as shown in FIG. The first measurement point 21 to the eighth measurement point 28 are points on the side 201 to the side 204 of the operation surface 20 as indicated by a circle in FIG.

  The region is, for example, a region (first region 31 to eighth region 38) surrounded by two adjacent straight lines and the side of the operation surface 20 in FIG. This area is defined as many as the number of measurement points. The first region 31 is, for example, a region surrounded by a first straight line 41 [nth straight line], a second straight line 42 [(n + 1) th straight line], and a side 201.

(Configuration of touchpad 2)
The touch pad 2 detects a position on the touched operation surface 20 by, for example, touching the operation surface 20 with a part of the operator's body (for example, an operation finger) or a dedicated pen. For example, the operator can operate the connected electronic device by operating the operation surface 20. As the touch pad 2, for example, a touch pad of a resistance film method, an infrared method, a capacitance method, or the like can be used. In addition, the touch pad 2 may detect the contact position of the detection target from, for example, a distance image obtained by imaging the operation surface 20. The touch pad 2 of the present embodiment is, for example, a capacitive touch pad.

  The touch pad 12 includes a plurality of drive electrodes and a plurality of detection electrodes that intersect with each other while maintaining insulation below the operation surface 20. The touch pad 2 scans all combinations of the plurality of drive electrodes and the plurality of detection electrodes, reads the capacitance for each combination, and detects the detection target based on the capacitance equal to or greater than a predetermined threshold value. The detected operation point P is calculated.

The calculation of the operation point P is performed using, for example, a weighted average. The touch pad 2 calculates the coordinates of the operation point P for each scan, and periodically outputs detection information S ₁ that is information on the calculated coordinates to the control unit 6. The coordinates of the operation point P are, for example, coordinates in the xy coordinate system set on the operation surface 20 as shown in FIG. In the xy coordinates, the reference point 200 is the origin, the horizontal axis (the left-right direction of the vehicle 8) is the x-axis, and the vertical axis (the front-back direction of the vehicle 8) is the y-axis.

(Configuration of load detection unit 4)
For example, as illustrated in FIG. 1B, the load detection unit 4 detects a load in a direction in which the operation surface 20 is pushed in as positive, and outputs an output value V corresponding to the detected load to the control unit 6. To do. The load detection unit 4 is disposed on the back side of the touch pad 2 and in the center of the operation surface 20.

  The load detection unit 4 detects the load using, for example, a piezo-type or strain gauge-type load sensor. The load detection part 4 of this Embodiment is a strain gauge type load sensor as an example.

(Configuration of control unit 6)
The control unit 6 includes, for example, a CPU (Central Processing Unit) that performs operations and processes on acquired data according to a stored program, a RAM (Random Access Memory) that is a semiconductor memory, a ROM (Read Only Memory), and the like. Microcomputer. In this ROM, for example, a program for operating the control unit 6 is stored. For example, the RAM is used as a storage area for temporarily storing a calculation result, a set load threshold Th, and the like. Further, the control unit 6 has means for generating a clock signal therein, and operates based on this clock signal.

The control unit 6 has load information 60 and area information 61. The control unit 6, detection information S _1, and operation information S ₂ is the information such as the presence or absence of the position and the push operation of the operating point P on the basis of the output value V obtained from the load detection unit 4 obtains from the touch pad 2 Is generated and output to the connected electronic device.

  The above-described load threshold Th is a threshold for determining a push operation performed on the operation surface 20. The control unit 6 determines that a push operation has been performed when the output value V output from the load detection unit 4 is equal to or greater than the load threshold Th. The load threshold value Th is set according to the position of the operation point P and the like as will be described later.

The load information 60 is information on the output value V output from the load detection unit 4 when a reference load is applied to the reference point 200 and the first measurement point 21 to the eighth measurement point 28. The output value V output from the load detection unit 4 when the reference load is added to the reference point 200 is the output value V ₀ . The output value V output from the load detection unit 4 when the reference load is applied to the first measurement point 21 to the eighth measurement point 28 is the output value V ₁ to the output value V ₈ .

  The second measurement point 22, the fourth measurement point 24, the sixth measurement point 26, and the eighth measurement point 28 are corner points of the operation surface 20, as shown in FIG. The first measurement point 21 is the center point of the side 201 of the operation surface 20 on the right side of the paper surface of FIG. The fifth measurement point 25 is the center point of the side 202 of the operation surface 20 on the left side of the drawing in FIG. The x-axis is an axis that passes through the first measurement point 21 and the fifth measurement point 25.

  The third measurement point 23 is the center point of the side 203 of the operation surface 20 on the upper side of the drawing in FIG. The seventh measurement point 27 is the center point of the side 204 of the operation surface 20 on the lower side of the drawing in FIG. The y axis is an axis that passes through the third measurement point 23 and the seventh measurement point 27.

  The control unit 6 divides the operation surface 20 into a first region 31 to an eighth region 38 based on the reference point 200 and the first measurement point 21 to the eighth measurement point 28. The area information 61 is information regarding the first area 31 to the eighth area 38. The area information 61 may include area boundary information as a numerical value or a function.

The first region 31 is a region surrounded by the first straight line 41 and the second straight line 42 that pass through the reference point 200 and the side 201. Distance from the reference point 200 to the first measurement point 21 is _{D 1.} Note that the first region 31 includes the first straight line 41.

The second region 32 is a region surrounded by the second straight line 42 and the third straight line 43 passing through the reference point 200 and the side 203. Distance from the reference point 200 to the second measurement point 22 is _{D 2.} Note that the second region 32 includes the second straight line 42.

The third region 33 is a region surrounded by the third straight line 43 and the fourth straight line 44 passing through the reference point 200 and the side 203. Distance from the reference point 200 to the third measurement point 23 is _{D 3.} Note that the third region 33 includes the third line 43.

The fourth region 34 is a region surrounded by the fourth straight line 44 and the fifth straight line 45 passing through the reference point 200 and the side 202. Distance from the reference point 200 to the fourth measurement point 24 is _{D 4.} Note that the fourth region 34 includes the fourth straight line 44.

The fifth region 35 is a region surrounded by the fifth straight line 45 and the sixth straight line 46 passing through the reference point 200 and the side 202. Distance from the reference point 200 to the fifth measurement point 25 is a _{D 5.} Note that the fifth region 35 includes the fifth line 45.

The sixth area 36 is an area surrounded by the sixth straight line 46 and the seventh straight line 47 passing through the reference point 200 and the side 204. Distance from the reference point 200 to the measurement point 26 of the sixth is _{D 6.} Note that the sixth region 36 includes the sixth straight line 46.

The seventh region 37 is a region surrounded by the seventh straight line 47 and the eighth straight line 48 passing through the reference point 200 and the side 204. Distance from the reference point 200 to the measurement point 27 of the seventh, a _{D 7.} Note that the seventh region 37 includes the seventh line 47.

The eighth region 38 is a region surrounded by the eighth straight line 48 and the first straight line 41 passing through the reference point 200 and the side 201. Distance from the reference point 200 to the measurement point 28 of the eighth, a _{D 8.} Note that the eighth region 38 includes the eighth straight line 48.

The apex angles (reference angles) on the reference point 200 side of the first region 31 to the eighth region 38 are an angle θ ₁ to an angle θ ₈ .

The control unit 6, for example, tan θ (= y _t / x _t ) of the angle θ formed by the first straight line 41 and a straight line connecting the reference point 200 and the coordinates (x _t , y _t ) of the operation point P. The region where the operation point P is located is determined based on the value of. Note that when the coordinate x _t is zero, tan θ cannot be calculated, and therefore, the control unit 6 determines whether it is located on the third straight line 43 or the seventh straight line 47 according to the coordinate y _t .

Specifically, the control unit 6, for example, as shown in FIG. 2 (a), check the sign of x coordinate x _t operating point P, the first quadrant operation point P if it is positive or fourth If it is located in the quadrant, and if it is negative, the operation point P is located in the second quadrant or the third quadrant.

That is, when the x coordinate x _t is positive, the control unit 6 sets the operation point in any of the first region 31, the second region 32, the seventh region 37, and the eighth region 38 depending on the value of tan θ. Determine if P is located. The control unit 6 determines whether x-coordinate x _t be a negative, the operating point P in any region of the third region 33 to the sixth region 36 is located by the value of tan .theta.

The control unit 6 outputs the output value at the reference point 200 as V ₀ , the output value at the nth measurement point as V _n , the distance from the reference point 200 to the nth measurement point as D _n , and the operation point from the reference point 200. the distance to P as _{D t,} is calculated by equation (1) below threshold Th _n for the n.
Th _n = V ₀ − (V ₀ −V _n ) × (D _t / D _n ) (1)
FIG. 2B shows a straight line represented by the equation (1). As shown in this equation (1), the nth threshold value Th _n decreases in proportion to the distance D _t from the reference point 200 to the operation point P.

Subsequently, the control unit 6 determines the angle formed by the nth straight line and the (n + 1) th straight line as the reference angle θ _n , the angle formed by the straight line connecting the nth straight line, the reference point 200 and the operation point P as the angle θ, and The operation point detected by the following equation (2) using the above equation (1) with the ratio of the angle, where the angle between the straight line and the (n + 1) th straight line is the angle (θ _n −θ) A determination threshold Th corresponding to P is determined.
Th = ((θ _n −θ) / θ _n ) × Th _n + (θ / θ _n ) × Th _{n + 1} (2)

Specifically, as an example, as illustrated in FIG. 2A, the control unit 6 first sets the operation point P to the first straight line 41 and the second line when the operation point P exists in the first region 31. to as located on the straight line 42 by equation (1) calculates the first threshold value Th ₁ and the second threshold value Th _2.
Th ₁ = V ₀ − (V ₀ −V ₁ ) × (D _t / D ₁ ) (3)
Th ₂ = V ₀ − (V ₀ −V ₂ ) × (D _t / D ₂ ) (4)

Next, the control unit 6 sets the reference angle θ ₁ of the first region 31, the angle formed by the straight line connecting the first straight line 41, the reference point 200, and the operation point P to the angle θ, and the straight line and the second straight line 42. The determination threshold value Th is calculated by substituting the equations (3) and (4) into the above equation (2) with the angle formed by the angle (θ ₁ −θ).
Th = ((θ ₁ −θ) / θ ₁ ) × Th ₁ + (θ / θ ₁ ) × Th ₂ (5)
The control unit 6 compares the determination threshold value Th with the output value V output from the load detection unit 4 to determine the presence or absence of the push operation.

For example, as illustrated in FIG. 2C, the determination threshold Th is a continuous value because the contribution rate of one measurement point is maximized at the boundary between adjacent regions. The first threshold value Th ₁ , the third threshold value Th ₃ , the fifth threshold value Th _5, and the seventh threshold value Th ₇ are values at which the output value V _n is obtained by measurement. Therefore, it does not necessarily become the same value. Similarly, the second threshold value Th ₂ , the fourth threshold value Th ₄ , the sixth threshold value Th _6, and the eighth threshold value Th ₈ are not necessarily the same value.

  Below, an example of operation | movement of the operating device 1 which concerns on this Embodiment is demonstrated according to the flowchart of FIG.

(Operation)
When the vehicle 8 is turned on, the control unit 6 of the controller device 1 periodically receives the detection information S ₁ from the touch pad 2 and the output value V from the load detection unit 4. When “Yes” in Step 1 is established, that is, when an operation is detected based on the detection information S ₁ (Step 1: Yes), the control unit 6 determines the coordinates (X _t ) of the operation point P based on the detection information S _1. , Y _t ) is acquired (Step 2).

Next, the control unit 6 sets the load threshold Th (Step 3). Specifically, the control unit 6 determines a region where the operation point P is located based on the region information 61 and the coordinates (X _t , Y _t ) of the operation point P. The control unit 6, the threshold _{Th n + 1} is calculated, and these with the reference angle theta _n of based on the determined regions and threshold Th _n for the n from equation (1) the (n + 1), the angle theta and The load threshold value Th is set by substituting the angle (θ _n −θ) into the equation (2).

Next, the control unit 6 compares the output value V corresponding to the detected load with the set load threshold Th to determine the presence or absence of a push operation. Control unit 6, when the output value V corresponding to the detected load is set load threshold Th or more (Step4: Yes), generates operation information S ₂ to the push operation is performed in the operating point P And output to the connected electronic device (Step 5).

Here, in step 4, when the output value V corresponding to the detected load is smaller than the set load threshold Th (Step 4: No), it is assumed that the operation finger 9 is detected at the operation point P. It generates operation information _{S 2} and outputs the connected electronic equipment (Step6).

(Effect of embodiment)
The controller device 1 according to the present embodiment can suppress variations in determination with respect to a push operation performed at the same place on the operation surface 20 with the same operation force. Specifically, the controller device 1 is optimal for the operating point P based on the above formulas (1) and (2) using the output value V _n for the reference load added to different positions on the operating surface 20. The determination threshold Th can be set. Therefore, the controller device 1 can suppress variations in the determination with respect to the push operation performed with the same level of operation force at different places on the operation surface 20 as compared with the case where this configuration is not adopted.

  Since the operating device 1 has not only four corners but also the center of the side 201 to the side 204, it is possible to divide the operating surface 20 into smaller areas and set the determination threshold Th with high accuracy. it can.

  Since the controller device 1 sets the determination threshold value based on the contribution rate, it is possible to set a continuous determination threshold value at the boundary of the region as compared to the case where this configuration is not adopted.

  Although the embodiment of the present invention has been described above, this embodiment is merely an example, and does not limit the invention according to the claims. The novel embodiment can be implemented in various other forms, and various omissions, replacements, changes, and the like can be made without departing from the gist of the present invention. In addition, not all the combinations of features described in this embodiment are essential to the means for solving the problems of the invention. Further, this embodiment is included in the scope and gist of the invention, and also included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 1 ... Operation apparatus, 2 ... Touch pad, 4 ... Load detection part, 6 ... Control part, 8 ... Vehicle, 9 ... Operation finger, 12 ... Touch pad, 20 ... Operation surface, 21-28 ... 1st measurement point- 8th measurement point, 31-38 ... 1st field-8th field, 41-48 ... 1st straight line-8th straight line, 60 ... Load information, 61 ... Area information, 80 ... Floor console, 81 ... Center console, 85 ... Display device, 200 ... Reference point, 201-204 ... Side

Claims (3)

A detection unit for detecting an operation performed on the operation surface;
A load detection unit for detecting a load applied to the operation surface;
An output value when the same load is applied to a predetermined reference point and a plurality of measurement points on the operation surface is stored, and the reference point, the nth measurement point (n is an integer of 1 or more) and the ( When an operation is detected in a region surrounded by n + 1) measurement points, it is assumed that there is an operation point that has detected an operation on an nth straight line connecting the reference point and the nth measurement point. It is assumed that the operation point is on the (n + 1) th straight line connecting the reference point and the (n + 1) th measurement point, and the nth threshold value calculated according to the output value of the n measurement point. The (n + 1) th threshold value calculated according to the output value of the point and the (n + 1) th measurement point is added at a contribution rate according to the actually detected operation point to determine the push operation. A determination unit for determining a determination threshold value to be used;
The operating device with. The determination unit
The output value at the reference point is V ₀ , the output value at the n-th measurement point is V _n , the distance from the reference point to the n-th measurement point is D _n , and the distance from the reference point to the operation point D _t
Calculating the nth threshold value based on the formula of V ₀ − (V ₀ −V _n ) × (D _t / D _n ),
An angle formed by the nth straight line and the (n + 1) th straight line is a reference angle θ _n , an angle formed by a straight line connecting the nth straight line, the reference point, and the operation point is an angle θ, and the straight line and the first straight line The ratio of the angle _{where the} angle formed by the straight line of (n + 1) is the angle (θ _n −θ) is the contribution rate,
The determination threshold is determined based on an equation of ((θ _n −θ) / θ _n ) × nth threshold + (θ / θ _n ) × (n + 1) th threshold.
The operating device according to claim 1. The reference point is a center point of the operation surface,
The plurality of measurement points are points on a side of the operation surface.
The operating device according to claim 1 or 2.

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